
Clamp Ring Knob Assembly with Threaded Rod and Retainer
Product Overview
Original factory clamp hardware to safely secure high-pressure filter tanks.
Stripped threads or a cracked handle on a filter clamp ring prevent the vessel from properly sealing under normal operating pressure. The Jandy R0357500 clamp ring knob assembly includes the factory-spec threaded rod, molded tension knob, and spring retainer clip engineered for CV340, CL340, DEV48, and DEL48 series filters. Sourcing genuine OEM hardware ensures proper thread pitch and tensile strength to withstand 50 PSI working pressures without slipping.
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Benefits & What Makes It Different
Factory Clamping Specification
Engineered directly for Jandy CV340, CL340, DEV48, and DEL48 filter tanks to maintain correct band spacing and seal integrity.
Complete Service Kit
Includes the heavy-duty threaded rod, molded knob, and retention hardware for a direct replacement of stripped or seized components.
Tensile-Rated Alloy Rod
Resists thread galling, bending, and stress corrosion cracking when tightened to the manufacturer spring-coil gap specification.
Compatibility
- Jandy CV Series Cartridge Filters (CV340, CV460, CV580)
- Jandy CL Series Cartridge Filters (CL340, CL460, CL580)
- Jandy DEV Series D.E. Filters (DEV48, DEV60)
- Jandy DEL Series D.E. Filters (DEL48, DEL60)
When To Use This
Pro Tip
Apply a dab of silicone or anti-seize lubricant directly to the rod threads before assembly. It prevents galling between the nut and bolt and makes hand-tightening to full coil contact much easier.
Common Questions & Instructions
How do I know when the Jandy R0357500 clamp knob assembly needs replacement?
Replace the assembly if the plastic knob cracks, the rod threads strip or gall, the bolt bends, or you can no longer tighten the clamp ring until the spring coils touch.
Can I use an impact driver to tighten the clamp rod assembly?
No. Always tighten the R0357500 knob by hand or with a manual socket. Power tools generate rapid friction that strips threads and risks over-compressing or cracking the filter tank.
Which filter models does the R0357500 knob assembly fit?
This assembly is compatible with Jandy cartridge and D.E. models including the CV340, CV460, CV580, CL340, CL460, CL580, DEV48, DEV60, DEL48, and DEL60 filters.
Delivered today to your DFW neighborhood
Order this item by 2 PM Central on a weekday, and we'll have it on your driveway by evening. Same-day delivery is FREE to every ZIP in our DFW coverage area — no minimum — or it's free with our weekly service plan.



